[目的]研究喷药对稻飞虱的抗药性在大范围、长期内的影响。[方法]该研究采用20个水稻种植县1991-2009年的面板数据,通过建立个体固定效应模型,采用普通最小二乘法来估计。[结果]滞后一期针对稻飞虱的用药次数对当期稻飞虱的发生级别有显著的正的影响。[结论]虽然稻飞虱是一种迁飞性害虫,但是不同地区的农民的用药行为都受到了虫害发生级别的影响,因此,从大范围、长期来看,滞后一期用药对当期虫害的抗药性有显著的正的影响。 [Objective] The research aimed to study the effects of spraying on the resistance of planthoppers in a long-term and long-term. [Method] The panel data of 20 paddy planting counties from 1991 to 2009 were used in this study. The individual fixed effect model was established and estimated by ordinary least square method. [Result] The number of lag phase one for planthoppers had a significant positive impact on the occurrence level of planthoppers. [Conclusion] Although planthopper was a kind of migratory pest, the pesticide behavior of peasants in different areas was affected by the pest occurrence level. Therefore, from a large scale and long term, Drug resistance has a significant positive impact.